diff options
Diffstat (limited to 'cipher/crc.c')
| -rw-r--r-- | cipher/crc.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/cipher/crc.c b/cipher/crc.c index 2abbab28..6d70f644 100644 --- a/cipher/crc.c +++ b/cipher/crc.c @@ -52,6 +52,19 @@ # endif #endif /* USE_ARM_PMULL */ +/* USE_PPC_VPMSUM indicates whether to enable PowerPC vector + * accelerated code. */ +#undef USE_PPC_VPMSUM +#ifdef ENABLE_PPC_CRYPTO_SUPPORT +# if defined(HAVE_COMPATIBLE_CC_PPC_ALTIVEC) && \ + defined(HAVE_GCC_INLINE_ASM_PPC_ALTIVEC) +# if __GNUC__ >= 4 +# define USE_PPC_VPMSUM 1 +# endif +# endif +#endif /* USE_PPC_VPMSUM */ + + typedef struct { u32 CRC; @@ -61,6 +74,9 @@ typedef struct #ifdef USE_ARM_PMULL unsigned int use_pmull:1; /* ARMv8 PMULL shall be used. */ #endif +#ifdef USE_PPC_VPMSUM + unsigned int use_vpmsum:1; /* POWER vpmsum shall be used. */ +#endif byte buf[4]; } CRC_CONTEXT; @@ -80,6 +96,13 @@ void _gcry_crc24rfc2440_armv8_ce_pmull (u32 *pcrc, const byte *inbuf, size_t inlen); #endif +#ifdef USE_PPC_VPMSUM +/*-- crc-ppc.c --*/ +void _gcry_crc32_ppc8_vpmsum (u32 *pcrc, const byte *inbuf, size_t inlen); +void _gcry_crc24rfc2440_ppc8_vpmsum (u32 *pcrc, const byte *inbuf, + size_t inlen); +#endif + /* * Code generated by universal_crc by Danjel McGougan @@ -388,6 +411,9 @@ crc32_init (void *context, unsigned int flags) #ifdef USE_ARM_PMULL ctx->use_pmull = (hwf & HWF_ARM_NEON) && (hwf & HWF_ARM_PMULL); #endif +#ifdef USE_PPC_VPMSUM + ctx->use_vpmsum = !!(hwf & HWF_PPC_ARCH_2_07); +#endif (void)flags; (void)hwf; @@ -416,6 +442,13 @@ crc32_write (void *context, const void *inbuf_arg, size_t inlen) return; } #endif +#ifdef USE_PPC_VPMSUM + if (ctx->use_vpmsum) + { + _gcry_crc32_ppc8_vpmsum(&ctx->CRC, inbuf, inlen); + return; + } +#endif if (!inbuf || !inlen) return; @@ -477,6 +510,9 @@ crc32rfc1510_init (void *context, unsigned int flags) #ifdef USE_ARM_PMULL ctx->use_pmull = (hwf & HWF_ARM_NEON) && (hwf & HWF_ARM_PMULL); #endif +#ifdef USE_PPC_VPMSUM + ctx->use_vpmsum = !!(hwf & HWF_PPC_ARCH_2_07); +#endif (void)flags; (void)hwf; @@ -811,6 +847,9 @@ crc24rfc2440_init (void *context, unsigned int flags) #ifdef USE_ARM_PMULL ctx->use_pmull = (hwf & HWF_ARM_NEON) && (hwf & HWF_ARM_PMULL); #endif +#ifdef USE_PPC_VPMSUM + ctx->use_vpmsum = !!(hwf & HWF_PPC_ARCH_2_07); +#endif (void)hwf; (void)flags; @@ -839,6 +878,13 @@ crc24rfc2440_write (void *context, const void *inbuf_arg, size_t inlen) return; } #endif +#ifdef USE_PPC_VPMSUM + if (ctx->use_vpmsum) + { + _gcry_crc24rfc2440_ppc8_vpmsum(&ctx->CRC, inbuf, inlen); + return; + } +#endif if (!inbuf || !inlen) return; |